<template>
	<view>
		<my-search @myclick="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<scroll-view scroll-y="true" :style="{height: wh + 'px'}" class="left-scroll-view">
				<block v-for="(item, i) in cateList" :key="i">
					<view :class="['left-scroll-view-item', i === active ? 'active' :'']" @click="activeChanged(i)">
						{{item.cat_name}}
					</view>
				</block>
			</scroll-view>
			<scroll-view scroll-y="true" :style="{height: wh + 'px'}" :scroll-top="scrollTop"> 
				<view class="cate-lv2" v-for="(item2, i2) in cateLevel2" :key="i2">
					<view class="cate-lv2-title">
						/{{item2.cat_name}}/
					</view>
					<view class="cate-lv3-list" >
						<view class="cate-lv3-item" v-for="(item3, i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon.replace('dev', 'web')"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>

		</view>
	</view>
</template>

<script>
import badgeMix from '../../mixins/tabbar-badge.js'
	export default {
		mixins: [badgeMix],
		data() {
			return {
				wh: 0,
				active: 0,
				cateList: [],
				cateLevel2: [],
				scrollTop:0
				
			};
		},
		onLoad() {
			this.getCateList()
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight - 50
		},
		methods: {
			async getCateList() {
				const {
					data: res 
				} = await uni.$http.get('/api/public/v1/categories')

				if (res.meta.status !== 200) {
					return
					uni.$showMsg()
				}
				this.cateList = res.message
				this.cateLevel2 = res.message[0].children
			},
			activeChanged(i) {
				this.active = i
				this.cateLevel2 = this.cateList[i].children
				this.scrollTop = this.scrollTop === 0 ? 1 : 0

			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
				})
				
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}


		}
	}
</script>

<style lang="scss">
	.scroll-view-container {
		display: flex;

		.left-scroll-view {
			width: 120px;

			.left-scroll-view-item {
				background-color: #f7f7f7;
				line-height: 60px;
				text-align: center;
				font-size: 12px;

				&.active {
					background-color: #ffffff;
					position: relative;

					&::before {
						content: '';
						display: block;
						width: 3px;
						height: 30px;
						background-color: #c00000;
						position: absolute;
						top: 50%;
						left: 0;
						transform: translateY(-50%);

					}
				}
			}
		}


	}

	.cate-lv2-title {
		font-size: 12px;
		font-weight: bold;
		padding: 15px 0;
		text-align: center;

	}
	
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		.cate-lv3-item{
			width: 33.33%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			margin-bottom: 10px;
			
			image{
				width: 60px;
				height: 60px;
			}
			text{
				font-size: 12px;
				
			}
		}
	}
</style>
